STARKVILLE — The closure of a Mississippi semiconductor firm will cost a California company $60 million. Power Integrations of San Jose, Calif., says it will write off its 2010 investment in SemiSouth, a Starkville, firm that’s closing. SemiSouth’s 90 employees will be laid off. SemiSouth, which makes silicon carbide semiconductors, announced its closure last week. […] [...]

STARKVILLE — SemiSouth has been awarded its third US patent in 2009, and 18th overall in SiC power electronics technology. The patents cover methods of making normally-off SiC JFETs, self-aligned SiC fabrication methods and integration of SiC JFET, diodes and circuits. According to Dr. Jeff Casady, chief technology officer and vice president of business development, […] [...]